A. High volatile matter
B. Low ash
C. High calorific value
D. High ash
For long flame and easy ignition, the coal used should have_________________? Read More »
Fuels and Combustion A. Absorption in wash oil
B. Adsorption on bog iron bed
C. Bubbling it through dilute sulphuric acid
D. Adsorption on silica gel
Coke oven gas is stripped of its H2S and mercaptans content by_________________? Read More »
Fuels and Combustion A. Amount of heat liberated
B. Flame temperature
C. Flue gas temperature
D. Any of the above
Presence of nitrogen in combustion air does not reduce the ____________________? Read More »
Fuels and Combustion A. H2 & CO
B. H2 & CH4
C. CH4 & CO
D. H2 & CO2
Coke oven gas constitutes mainly of ____________________? Read More »
Fuels and Combustion A. Temperature of the flue gas
B. Its height
C. Both A. & B.
D. Neither A. nor B.
Natural draft created by the chimney depends upon _____________________? Read More »
Fuels and Combustion A. Higher calorific value
B. Lower hydrogen content
C. Both A. and B.
D. Neither A. nor B.
A. Volatiles
B. Ash
C. Iron
D. Moisture
Purity of coke means that, it is high in carbon and low in __________________? Read More »
Fuels and Combustion A. LPG
B. Coal briquettes
C. Tar
D. Colloidal fuels
Which of the following is not a ‘manufactured’ fuel ? Read More »
Fuels and Combustion A. Blast furnace gas
B. Coke oven gas
C. Carburetted water gas
D. Oil refinery gas
Which of the following has the highest gross calorific value ? Read More »
Fuels and Combustion A. Calorific value increases sometimes
B. Bulk density always decreases
C. Clinkering tendency during combustion increases
D. None of these
With increase in moisture content of coal, its_____________________? Read More »
Fuels and Combustion